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 for linux-mtd@lists.infradead.org; Mon, 24 Feb 2014 15:56:16 +0000
From: Bill Pringlemeir <bpringlemeir@nbsps.com>
To: Richard Weinberger <richard@nod.at>
Subject: Re: UBI leb_write_unlock NULL pointer Oops (continuation)
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Date: Mon, 24 Feb 2014 10:48:33 -0500
In-Reply-To: <87sir8ms41.fsf@nbsps.com> (Bill Pringlemeir's message of "Mon,
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On 24 Feb 2014, bpringlemeir@nbsps.com wrote:

> /* could reschedule here... */
> on 'if (vol->eba_tbl[lnum] != from)' another thread has this
> 'ltree_entry' so count is >1.
> /* could reschedule here... */

Sorry, maybe that is not true.  I don't know enough about the logic of
ubi_eba_copy_leb().  Another thread has at least changed the physical
map.  It may/may not still have the rwsemaphore.